Louise Story – “[T]he Internet has given publishers a new form of ammunition: raw server data with precise numbers of site visits and page views. This data does not correlate directly to the number of visitors, but it does give them ballpark figures that they say are far more accurate than the extrapolations drawn by ratings companies based on panel sampling”

Update: From the Google Reader Blog – “These numbers include subscribers across all Google services, including Reader, iGoogle, and Orkut. You can see them in Reader’s feed search results (pictured below) and the Google Webmaster Tools. Additionally, our crawler reports them to the publisher each time we fetch the feed. Reader’s feed search was recently showing stale and incomplete data, but as of today (October 15) the numbers should be the same everywhere.”